An interface is simply a collection of functions that describe the behavior of the Object in some aspect. The interface itself does not implement any functionality, it just defines what methods the Object must have, and behave according to it. In some design methods this is called a contract for the Object.

What is an interface in C language?

An interface contains definitions for a group of related functionalities that a non-abstract class or a struct must implement. An interface may define static methods, which must have an implementation. Beginning with C# 8.0, an interface may define a default implementation for members.

WHAT IS interface and example?

An interface is a description of the actions that an object can do… for example when you flip a light switch, the light goes on, you don’t care how, just that it does. In Object Oriented Programming, an Interface is a description of all functions that an object must have in order to be an “X”.